suzy candiotti spoke with the retired fbi agent's wife and her mission to bring him home. >> this is my husband. i have to take care of him. i have to get him home. >> reporter: but after disappearing more than five years ago christine levittson's husband, bob, is a long way from home where he once cuddled his newborn grandson. >> i am not in very good health. i am running very quickly out of diabetes medicine. >> reporter: this video showing the much thinner retired fbi agent being held hostage was sent to the family two years ago. state department says it's unclear who is holding him. >> when they received the video, we had high hopes because we e-mailed back a mof times in order to get whoever is holding him to let us know what we need to do to get bob home. unfortunately, that hasn't happened. >> levinson disappeared off iran's coast in 2007 where his family says he was investigating cigarette smuggling for a private company. fbi billboards are now up in new york's time square in hopes that visiting delegates to the moan's general assembly will see them. >> whamakes you think tha